Had the pleasure of working with @mohannad-dardiry.bsky.social to rethink what it means to develop for life. Many thanks to @dev-journal.bsky.social! @embl.org #LifelongDevSI

Cette éponge carnivore (Chondrocladia sp. nov.) fait partie des 30 nouvelles espèces découvertes autour des îles Sandwich du Sud. "Nous n'avons analysé que 30 % des échantillons prélevés. La confirmation de ces 30 nouvelles espèces témoigne donc d'une immense biodiversité encore inexplorée" 1/2

Our study, just published in #ScienceAdvances and funded by @hfspo.bsky.social, explores the post metamorphic cell composition of the sea urchin juvenile, revealing that its body is head-like. Long considered brainless creatures, they’re all brain instead! www.science.org/doi/10.1126/...

A whole-body cell type atlas mapped into an electron microscopy volume of an annelid worm https://www.biorxiv.org/content/10.1101/2025.10.30.685666v1

In the spirit 👻 of Freaky Friday 🎃, here is a beautiful yet eery video of zebrafish retina development showing horizontal cells (🔵) finding their way out of the crowded amacrine (🟠) layer to settle beneath the photoreceptors. Happy #Halloween! 🎥: PhD student Rae Wong from the @nordenlab.bsky.social

Fascinating! 😍 Still so much to discover and learn!

Exploring the potential of Schmidtea mediterranea as a model for reproductive toxicity through analysis of sterility caused defective m6A RNA regulation - ScienceDirect www.sciencedirect.com/science/arti...

First neurons didn’t appear overnight. We trace their roots to ancient secretory cells - showing how lifestyle & behavior shaped the evolution of first synapses.🧠🌊 #Evolution #Neuroscience Our latest in @natrevneuro.nature.com Link: rdcu.be/eMX3E @jeffcolgren.bsky.social @msarscentre.bsky.social

Join us in Lyon next month

What makes PhD students happy? Good supervision @nature.com 🧪🎓 www.nature.com/articles/d41...

See you all in #BeautifulRoscoff next Spring 🙌🏻

How can we see the cells that make up a living organism? Membrane-localising tags can drive fluorescent proteins to the cell's outer membrane, making their outlines visible. But the tags don't work well in all organisms. How do you find one for your species of interest? 🧵 Check our latest preprint

We had a full room today for a talk by Nicolas Minc @minclab.bsky.social from @ijmonod.bsky.social 👏 He presented his team's latest work on the mechanics of cell division, including how they use magnetic tweezers to rotate mitotic spindles 💥 Thank you for joining us!

🔬 Limb regeneration depends on regenerative signaling center cells — but how do these cells influence others to proliferate, migrate, or differentiate? We’re recruiting PhD or Postdoc candidates to explore this with our collaborator @osvaldo-chara.bsky.social !

What really catches my eye is the mouth side… the little arm just starting to grow back is so cute. #invertebrates

Our most recent study shows that stem cells in Schmidtea mediterranea do not rely on physical contacts or fixed structures to maintain their identity and regenerative potential. @stowersinstitute.bsky.social @cp-cellreports.bsky.social @vilcekfoundation.bsky.social www.cell.com/cell-reports...

If you’re interested in joining our team as an Assistant Engineer, don’t hesitate to get in touch! Exciting projects, a friendly and dynamic team - all based in the beautiful French Riviera! @institutBiologieValrose - @cnrscotedazur.bsky.social

Our latest paper on a histone methyltransferase-independent function of PRC2 controlling small RNA dynamics during programmed DNA elimination in Paramecium is now published in #NAR. #RNAbiology #TEsky #smallRNAs #PRC2 #DNAelimination 1/5 academic.oup.com/nar/article-...

We are happy to share our latest work in @nature.com . We study the genomic and cellular basis of facultative symbiosis in Oculina patagonica - a Mediterranean coral remarkable for its ability to survive long periods without algal symbionts. Led by Shani Levy and @xgrau.bsky.social rdcu.be/eLbaZ

Hey Regen folks 👋 Excited to share that our single-nucleus RNA-seq dataset for Polypterus fin regeneration is now live at the Broad Institute portal! Dive in here: tinyurl.com/5bck22jx Big thanks to the team for making this happen—looking forward to seeing what you all discover!

✍️ The Léon Lab and ProtéoSeine platform published a new article 📖 @plos.org genetics 📃 A genetic screen reveals a key role for Reg1 in 2-deoxyglucose sensing and yeast AMPK inhibition 🔗 journals.plos.org/plosgenetics...

[Message de service] Vous pensez/voulez postuler à un poste de Maître de Conférence ? Fort bien. Avez-vous pensé à vous inscrire pour passer votre qualification ? C'est en ce moment qu'il faut aller s'inscrire en ligne... (odyssee.enseignementsup-recherche.gouv.fr)

"Why sequence the #genome of every species? A view from evolutionary biology" Did you catch this amazing new review in our journal by @peterhox.bsky.social? REad it for FREE here now: www.cambridge.org/core/journal... @thembauk.bsky.social #dnasequencing #chromosome #mutation #evolution

Congrats Dr Zoe Atzin Velasquillo Ramirez, we are all very proud of you !

Thank you again @canaztekin.bsky.social for your venue ! It was a great pleasure to host you !

Tomorrow !!

#Institutionnel 🧬 | En septembre 2025, le programme de recherche ATLASea a franchi la barre des 100 génomes marins séquencés ! #PEPR #France2030 ▶️

🪱 Planarian (Schmidtea mediterranea)
✨ Planarians can regenerate a complete body from tiny fragments thanks to their amazing pluripotent stem cells (neoblasts) 🧬 A star of regeneration and stem cell biology 📸 Image by Rachel Gandee #ModelMonday #DevBio

Hello World! It took a minute, but much improved version (thank you peer review) of Joris paper is out @genomebiolevol.bsky.social bsky.app/profile/geno...

Your reminder that many of the muscles, nerves and bones you use to hear and talk with correspond to gill structures in fish. 🧪 #evolution #paleontology

La plus célèbre des primatologues, Jane Goodall, vient de s'éteindre à 91 ans. L'occasion de réécouter son interview par @natachatriou.bsky.social en 2022 pour @sciencecqfd.bsky.social www.radiofrance.fr/francecultur...

Today is a « first day » for many of us ! 1st day as a PhD student and monitor for Remi and 1st day as research director for Eve

📢 PhD Thesis defense 📅 October 8th 📍 Institut Jacques Monod Next week, Zoé Velasquillo Ramirez @zoevel.bsky.social , ( @stemdevevo.bsky.social Lab will defend her PhD thesis "Unraveling regeneration success in Platynereis dumerilii through a single-cell RNA-seq approach" ➡️ buff.ly/eZqpSBp

📣 "Nous misons sur de multiples interactions entre les équipes de recherche" 📃 Retrouvez l'interview de @vdoye.bsky.social, Directrice de l' @ijmonod.bsky.social pour la Fondation Bettencourt Schueller qui présente l'institut et son mode de fonctionnement 🔗 www.fondationbs.org/magazine/sci...

Happy to share the Biodiversity Cell Atlas white paper, out today in @nature.com. We look at the possibilities, challenges, and potential impacts of molecularly mapping cells across the tree of life. www.nature.com/articles/s41...

New publication | Science Advances www.science.org/doi/10.1126/...

📢 Institut Jacques Monod Seminars 📅 Oct. 7th 📍 Institut Jacques Monod Invited by the @stemdevevo.bsky.social Lab , @canaztekin.bsky.social will present an Institut Jacques Monod seminar on the theme « Signaling centers of appendage regeneration: from single cells to species » ➡️ buff.ly/Nvw4YZn

Very soon !

Day 19 - Depths. blood belly comb jelly (Ctenophora), helmet jellyfish (Cnidaria). Animals in the deep sea are some of the most beautiful, particularly the jellies with bodies like abstract portraits that move ethereally in the abyss. Here are two drawings of jellies you can find in the deep sea.

Me: *checks news* Me, 20 minutes later: *transforms into tiny crab, floats way on jellyfish*

Are digits modified fins, or evolutionary innovations? Read how we tackled this old question from a new angle🧪 A story with @chasebolt.bsky.social, @homeobox.bsky.social and myself, coordinated by @denisduboule.bsky.social from @college-de-france.fr and published in @nature.com today! #InHoxWeTrust

Tortoise/Turtle (order Testudines): Shells of many species of turtles and tortoises are intricately marked and coloured, yet are incredibly perfectly designed by nature to blend precisely with their natural habitats. Superb photos taken by Casey Leone. Top row, from left to right: #turtle #turtles

Predatory tunicates at the Monterey Bay Aquarium #TunicateTuesday #MarineLife #Invertebrates #DeepSea #Megalodicopia #MBARI #MontereyCanyon #Photography #WestCoast

Very excited to share an excellent review from @teresa-urli.bsky.social, published one week before her PhD defense! We did a deep dive into the fascinating biology of the variant Polycomb complex, PRC1.6 (1/5) journals.plos.org/plosgenetics...

There is always room for wonder.

How many chromosomes can an animal have? In our paper out now in @currentbiology.bsky.social we show that the Atlas blue butterfly has 229 chromosome pairs- the highest in diploid Metazoa! These arose by rapid autosome fragmentation while sex chromosomes stayed intact. www.cell.com/current-biol...

New short paper from our lab @currentbiology.bsky.social, in which we discover of a new mode of cell motility for choanoflagellates: flagellar gliding. www.cell.com/current-biol... - A 🧵

Please re-post: Interested in chromatin and its evolution? Good news! There's still time to join us in beautiful Catalonia (9-12 Dec) to discuss eukaryotic, bacterial, archaeal, and viral chromatin and how it all hangs together meetings.embo.org/event/24-evo... Abstract deadline: 30 September

More on the ancient foundation of animal development. Coyle & King illustrate how core regulatory modules were present in our pre-animal ancestors. The key was not invention, but recycling & new protein interactions. #CellBiology #multicellularity #protistsOnSky www.nature.com/articles/s41...